Adjustable slitter holder



March 1970 M. LUKACZYN, JR 3,501,989

ADJUSTABLE SLITTER HOLDER Filed Jan. 18, 1968 United States Patent O3,501,989 ADJUSTABLE SLITTER HOLDER Michael Lukaczyn, Jr., 60 Gavin St.,Yonkers, N.Y. 10701 Filed Jan. 18, 1968, Ser. No. 698,911 Int. Cl. B26dN22 US. Cl. 83-504 4 Claims ABSTRACT OF THE DISCLOSURE Adjustableslitter holder for use in printing presses paper processing machine, webtreating equipment or any sheet-like material which is held by a movingcylinder, such as a sheet fed offset press, or the like in which theslitting element is minutely shiftable in position with relation to theweb being treated by quickly, easily and precisely manipulatableadjustments, laterally and vertically of the web and is lockable inposition laterally of the web. Slitting includes perforating andscoring.

This invention relates generally to the field of web or moving sheettreatment and more particularly to an adjustable slitter holder.

It is among the objects of the present invention to provide a new anduseful slitter holder construction having improved characteristicsincluding:

(1) Simple low cost construction having long trouble free operatinglife.

(2) Ease of assembly and disassembly affording ease of replacement ofslitter element and other parts.

(3) Quick gross or coarse adjustment.

(4) Precise fine adjustment.

(5) Secure locking avoiding any change of adjustment during the run.

(6) Precise control of pressure of slitting element against the web orsheet.

(7) Adjustment of precise slitter element lateral positioning while theequipment continues to run without loss of slitting pressure against theweb or sheet being treated.

(8) The ability to increase or decrease the pressure of the slitterelement while operating against the material being treated when there isa tendency for the slitting to lose uniformity, or be affected by pressspeeds.

In the drawings in which similar reference characters designatecorresponding parts throughout the several views:

FIGURE 1 is a plan view of a preferred embodiment of the invention, withthe slitter carrying element in lowered position.

FIGURE 2 is a sectional view, partly in elevation, as seen from theplane 2--2 on FIGURE 1. In this figure the slitter carrying element isshown in its lowermost position during disassembly.

FIGURE 3 is a front elevational view of the embodi ment with the slitterelement in active raised position.

FIGURE 4 is a fragmentary elevational view comparable to FIGURE 2 butshowing the slitter carrying element in raised, normal operatingposition, exposing the disassembly notches.

' In accordance with the invention the device, generally indicated byreference character 10' comprises broadly a body element 12, lateraladjustment means 14, locking means 16, a slitter carrying element 18,vertical adjustment means 20, and a slitter element 11.

The body element 12 is of irregular shape, as seen in the drawings andhas a transverse bore 22 through which is disposed a cross member 24 ofa web treating device (not shown). The web treating device may be of anydesired kind such as a printing press, scorer, slitter,

or the like. The cross member 24 has a longitudinal keyway 26 withinwhich is slidably disposed, a key 28. The key 28 coacting with thekeyway 26 prevents rotation of body element 12 about cross member 24.

The lateral adjustment means 14 includes a rack member 34 secured tocross member 24, a pinion 36, gears 38 and 40, shaft 42, stem 44, knob46, and retaining means 48 to selectively secure the pinion 36 in theengaged and disengaged positions thereof. Gears 38 and 40 are secured toshaft 42 rotatably disposed in a stepped bore 50 in body element 12.Shaft 42 is held in position by a washer and snap ring 52. Stem 44 whichhas pinion 36 at the lower end thereof, has the knob 46 affixed to theupper end thereof, and said stem is provided with a pair of annulargrooves 54 and 56 with which the spring pressed balls 58 and 60 coact.The said grooves and balls are part of the retaining means 48 so thatvertical elevation of the stem 44 by raising the knob 46 permitsdisengagement of the pinion 36 from the gear 40 for easy long excursionsof the device 10 along the cross member 24 for large changes in positionof the slitter element 11. Because of the gear ratios which areobtained, manual rotation of knob 46 affords very fine adjustments ofthe position of slitter element 11.

The locking means 16 includes the key 28 in keyway 26 and a lever 62with a handle 64. The lower end of lever 62 is pivotally mounted on bodyelement 12 by a transverse pin 66 and is disposed in a well 68 in theupper wall 70 of element 12. The lowermost end of lever 62 has a camsurface 72 for which the key 28 acts as a follower to enable the lever62 in the position shown in FIGURE 2 to securely clamp the device 10 inprecise position along the cross member 24 and thereby in preciseposition with respect to the web 13 as carried by its supporting rolleror drum 15 (FIGURE 3). Flipping the handle 64 up provides a quickrelease, permitting a new positioning of slitter element 11. Animportant feature of this invention is that after the handle 64 israised, the pressure of the slitter element of the web or sheet isconstantly maintained so that fine adjustment can be made while theequipmnet continues to run.

The slitter carrying element 18 is a yoke which is pivotally mounted oncross member 24, the strut 76 joining and spacing the arms 78. Theslitter element 11 is rotatably mounted on a screw axle 80 journalled inarms 78. The strut 76 is provided with a slot 82 through which the lowerend of vertical adjusting element 82 passes, while the lower end ofspring 98 is adapted for downward resilient pressure thereon.

The vertical adjustment means 20 includes the vertical adjustmentelement 83 which is in the form of a screw having a head 84, a threadedportion 86, an unthreaded reduced shank 88, a washer and a snap ring 92in an annular groove therein. The portion 86 is in threaded engagementwith a threaded bore 94 in the forward portion 96 of the body element12. Rotation of the head 84 in one direction will press the slitterelement 11 down against the web 11 against drum 13 in a resilient mannerby compressing the resilient member or spring 98 against strut 76, whilerotation of the head 84 in the opposite direction will raise the slitterelement 11 out of contact with the web 13 when washer 90 contacts thelower surface of strut 76.

Whenever it is desired to replace certain of the parts in the lockingassembly it becomes a quick and easy matter. First the screw axle 80 isremoved and the slitting element 11 is released. This permits theslitter carrying element 18 to tbe lowered by rotating knob head 84 tolower the vertical adjusting element 83 until the parts take a positionapproximating that shown in FIGURE 2. This aligns holes 73 and slots 74so that the pin 66 and the key 28 can be removed by sliding them endwise(laterally of device 10) in either direction.

Thus all of these parts can be substituted without affecting the crossmember 24 or otherwise disturbing the equipment. Removal of transversepin 66 releases lever 62 so that it can be replaced.

I wish it to be understood that I do not desire to be limited to theexact details of construction shown and described for obviousmodifications will occur to a person skilled in the art to which thepresent invention pertains.

The term slitter includes a scorer or perforator.

I claim:

1. For use with a web-treating device with a cross member and a web, anadjustable slitter holder comprising:

(a) a body element slidably mounted on said cross member;

(b) lateral adjustment means for shifting said first body element inposition along said cross member;

(c) locking means for securing the body element in laterally adjustedposition;

(d) a slitter-carrying element movably connected to the body element;and

(e) vertical adjustment means for shifting the slittercarrying elementin position with respect to said body element, and vertically withrespect to said web; said locking means including a clamp compressing akey which is in engagement with the cross member.

2. For use with a web treating device with a cross member and a web, anadjustable slitter holder compris- (a) a body element slidably mountedon said cross member;

(b) lateral adjustment means for shifting said first body element inposition along said cross member;

(0) locking means for securing the body element in laterally adjustedposition;

(d) a slitter-carrying element movably connected to the body element;and

(e) vertical adjustment means for shifting the slittercarrying elementin position with respect to said body element and vertically withrespect to said web; said pinion being shiftable in and out ofengagement with said rack member.

3. Structure as claimed in claim 2 including retaining means toselectively secure the pinion in the engaged and disengaged positionsthereof.

4. Structure as claimed in claim 2, including a gear interposed betweensaid rack member and said pinion.

References Cited UNITED STATES PATENTS 1,730,196 10/1929 De Pamphilis83504 X 2,360,653 10/1944 Davidson 1 83 504 X 2,897,893 8/1959 Rockstromet al. 83505 X 3,041,907 7/1962 Gallagher 83504 X 3,091,146 5/1963 Bulk83504 X JAMES M. MEISTER, Primary Examiner US. Cl. X.R. 83-481, 507

